craig



(No Model.) 2 Sheets-Sheet 1.

' W. H. CRAIG.

` LUBRIGATOR FOR LOGOMOTIVBS.

No. 367,370. -Patented Aug. 2, 1887.

:VIII/lll,

` Wit? sur Ural) n. P Ens, Phnpunwmpw, wamqgwn. ne.

(No Model.) v 2 sheetssheen 2.

' W. H. CRAIG.

LUBRIATOR FOR LOGOMOTIVES.

Patented Augz. 1887.

N. PETERS, Pnoto-Lnhngrapher. wnsningiw. DA t;

UNITED STATES PATENT OFFICE.

.WARREN HILLIARD CRAIG, OF LAVRENCE, MASSACHUSETTS, ASSIGNOR, BY MESNEASSIGNMENTS, TO HIMSELF AND DAVID FRANKLIN ROBIN- SON, -OF SAME PLACE.

LUBRICATOR FOR LOCOMOTIVES.

SPECIFICATION forming part o f Letters Patent'No. 367,370, dated August2, 1887.

Application filed March 23, 1887. Serial No. 232,172.

T all whom it may concern: Be it known that I, WARREN HILLTARD CRAIG, ofLawrence, in the county of Essex, of the Commonwealth of Massachusetts,have invented a new and useful Improvement in c Lubricators forRailway-Locomotive Steam- Engines;` and I do hereby declare the same tobe described in the following specification and v vrepresented in theaccompanying drawings, of 1o Vwhlch- Figure 1 is a Vertical andmediansection of a lubricator for oiling'bothv the engine-cylinders andtheir valves and pistons, the plane of such section being taken throughthe line of i 5 the axes of the oil-educts leading in oppositedirections from such lubricator to the valvechests of the saidcylinders. Fig. 2 is a vertlcal and median section of the lubricator,the plane of such section being at right angles to 2o thatof Fig. 1.Fig. 3 is an elevation of the lubrlcator as applied to a boiler, andhaving both its sight-feed chambers arranged so as to b'eseen by theengineer when in his usual position neXt the right side of the cab ofthe engine. Fig. 4 is a horizontal section taken on line l 1 of Fig. 2.-Fig. 5 is another horizontal section taken on line 2 2 of Fig. ,2. Fig.6 isa horizontal section taken on line 3 3 of Fig. 1. Fig. 7 is avertical section taken on 3o line 4 4 of Fig. 5, and showing thepassages or parts leading to one of the sight-feed glass tubes. Thenature of my invention is duly defined 1n the claimshereinafterppresented.

In my improved lubricator the two sightfeed glass tubes of it arearranged at one side o f the oil-reservoir, rather than on oppositesides thereof, as is the usual custom, my arrangement of them being toadmit of both be-.

40 ing readily seen by the engineer when at his post in the cab of t-heengine, such post being close tothe right side of the cab, the usualarrangement, in which the reservoir is direct-ly between the twosight-feed tubes, causing one of them to be behind and so covered by thereservoir as to be out of sight of the engineer, who to obtain a view ofit has to leave his position.

In the drawings, A denotes the oil-reservoir,

(No model.) e

and B the stean1-condenser, of the lubricator. 5o In the lower part andonone side of the oilreservoir is apocket or chamber, a, (see Figs. 2,4, and 5,) from the middle part of which a tube, b, rises nearly to thetop of the oil-reservoir and opens into such pocket and reservoir. e

Extending up through the central part of the oilreservoiris a post, C,in which are four passages, c, d, d, and e, which are arranged asrepresented in Figs. 1, 2, 4, and 5, the median one, c, extending fromthetop of the post downward half or abonthalf the length of suchpost,and openingintoatubularbranchconduit, f, extending laterally fromit to the side of the reservoir, and opening into a tubularsupporting-shank, g, through which steam from the boiler is to pass intothe part f, and thence to and into the passage o, and thence through atube, c', into the condenser, the said tube c ybeing in continuation ofthe passage c, and at top having in it a valve, h', to open upward.

The shank g is supported by a bracket, i, eX- tending from the boiler K,(sce Fig. 3,) such shank being to receive steam from such boiler, andalso to serve as a support for the lubricator.

The tube o' is between two other tubes,d d, whose upper ends are at ashort distance below that of the tube c'. These tubes d d lead npwardinto the condenser from the passages d d, which at their lower ends openinto twoY branch educts h h, arranged as shown in Fig. 1, and leading tothe two valve-chests of the steam-cylinders of the locomotiveengine.

The passage eleads fromthelower part of the condenser downward withinthe post C, and thence turns upward and opens into the oilreservoir, allbeing as shown in Fig. 2, there being on the top of such oil-reservoir afillingoriice, k, provided with a screw-plug, l, for closing it.

From the pocket a two educts, m, are led in radial directions relativelyto the oil-reservoir, as shown in Fig. 5. Each of such eductsopens intoone of the two lower vertical carriers or supports of the two sight-feedglass tubes o o, whose upper vertical .carriers or supports A (shown atp p in Figs. 2 and 4) communicate directly with the vertical passages dd inman ner as represented in Fig. 4. To each educt m there is astop-cock, q, (see Fig. 5,) to regulate the discharge of oil into thenext adjacent sight-feed tube, and there is at the lower part of theoil-reservoir, and opening out thereof, a drainage-pipe, 1', providedwith astop-coek. s. (See Fig. 2.) 0n and projecting upward from suchdrainage-pipe is fixed a lantern, D, which is arranged so as toilluminate both of the sight-feed tubes, the arrangement of it being asshown in Figs. 2 and 5.

The steam entering the lubricator through the inducts g andfpasses intothe ducts c and c', and thence into the condenser B, from which thewater of condensation ilows by the ducts e and e into the oil-reservoir,displacing the oil therein and causing it to liow into and down the pipeb, and thence into the pocket a. From the said pocket the oil passesinto and up through the sightfeed glass tubes, it escaping into themthrough their induetion-nipples t and flowing in drops up through suchtubes or the water therein, and thence into the conduits p p, and thenceinto the steam-passages d d to and into the branch eductshh,by which thesteam charged with the oil is conveyed to the valve-chests of thecylinders of the engine.

There is to each educt h a common oil-cup, E, having to itsdischarging-orifice a screwplug, F. Within the tube h, and directlyunderneath each cup E, is a transverse partition, u, (see Figs. l and6,) above which is a duct, v, leading to the dischargingorice of thecup, and also into the part ofthe tube h which is in advance ofthepartition. Vithin such duct o is a valve, w, whose seat is at the top ofa passage, w', in the partition u, and opening into a branch, fr, thatcommunicates with the bore of the part ofthe tube h, which is in rear ofthe partition. There is to the branch .r a screw-plug, y, (see Fig. 2,)to act against and close'the mouth ofthe passage w'.

When the plug F is closed ou its seat and the plug y is off ts`seat, nooil from the cup E can escape, the steam passing through the passages Land 'w' and forcing upward the Valve; but when the plug F is oft itsseat and the plug y is closed on its seat oil from the cup can How intoand through the pipe h to the valve-chest of the cylinder, the steam tothe said chest and for operating the piston being at the time shut off.

In the apparatus as hereinbefore described, I claim- 1. rlheoil-reservoir provided with the central Vertical tubularsteam-inductleadnginto the condenser, and with the lateral branch orinduct opening out of the lower part of the vertical one and through theside ofthe reservoir, all being essentially as set forth.

2. The combination of the tubular supporting-shank, having thesteam-passage extending through it, with the oil-reservoir provided withthe central vertical tubular stealn-induct leading up from suchreservoir into the condenser, and with the lateral iuduet opening out ofthe lower part of the vertical one, and extending to the side of thereservoir and opening into the said supporting'shauk, all beingessentially as set forth.

3. The oil-reservoirprovided with thepocket in its lower part and at oneside of it, as represented, and having thereto an oil-induction tubeextending up from such pocket nearly to the top of the said reservoir,and also having the two eductsleading from it (the said pocket) to thesightfeed glass tubes arranged in the same side of such reservoir, allbeing substan tally as set forth.

4. The combination, with the oil-reservoir, of two sight-feed glasschambers or tubes arranged on one side only of and in the samehorizontal plane with the oil-reservoir, substantially as and for thepurpose represented.

5. A sight-feed lubricator having its two sightfeed glass chambers ortubes arranged at one side only of and on a level or in the samehorizontal plane with the oil-reservoir, and also having its oil eductsleading from it to the valve-chests of the engine-cylinders arranged toextend in opposite direction from the reservoir, as set forth.

WARREN HILLIARD CRAlG. Titnessesz R. H. EDDY, R. B. TORREY.

